Basically, I finished my period on the Tuesday 27th like normal, and took my contraceptive pills until the Thursday, I went home the friday and forgot to pack my pills. Foolishly Saturday night we had unprotected sex. It's now Monday, and ive experienced bleeding that's almost like a period. Is this because ive fooled about with my pills and this could be due to hormones, or am I pregnant and it's implantation bleeding? Thank you :)