Concerned about taking Sudafed with my Adderall ER 20mg?

There are 2 moderate interactions between both meds, moderate meaning:

Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.

Interactions between your drugs
Moderate
pseudoephedrine amphetamine
Applies to: Sudafed Sinus Nighttime Plus Pain (acetaminophen / diphenhydramine / pseudoephedrine), Adderall XR (amphetamine / dextroamphetamine)

Both pseudoephedrine and amphetamine can increase blood pressure and heart rate, and combining them may enhance these effects. Talk to your doctor before using these medications, especially if you have a history of high blood pressure or heart disease. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. Contact your doctor if your condition changes or you experience increased side effects. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Moderate
pseudoephedrine dextroamphetamine
Applies to: Sudafed Sinus Nighttime Plus Pain (acetaminophen / diphenhydramine / pseudoephedrine), Adderall XR (amphetamine / dextroamphetamine)

Both pseudoephedrine and dextroamphetamine can increase blood pressure and heart rate, and combining them may enhance these effects. Talk to your doctor before using these medications, especially if you have a history of high blood pressure or heart disease. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. Contact your doctor if your condition changes or you experience increased side effects. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

There are also 5 food-drug interaction.

Source and more info: https://www.drugs.com/interactions-check.php?drug_list=190-1644,66-10293

I suggest that if you feel uneasy about these potential interactions, wait and take the Sudafed until you can talk to your Dr. on Monday, when you can get properly medical advice.