PLEASE help me figure this out...personal experiences wanted...?

So, heres the whole story...sorry if TMI...Ok, so my period started on August 5. It lasted for 7 days like usual. Cycle is normally 29 days. My bf and I BD August 12,14,15,17,18,20, and 21. We really want a baby and we are hoping we got the timing right. We even made sure he was on top and I did the whole stay laying on your back with a pillow propped under your hips thing. I spotted/light bleeding for like 2 weeks (before "period"), then around period date bled a little heavier for 4-5 days, then stopped. Today me and the bf BD and afterward, there was more blood. Could this be because im pregnant and cervix is sensitive, or whats going on? I plan on testing tomarrow but I cant sleep thinking about it. Please tell me what you think, no rude answers. Thanks a bunch and baby dust to all that are trying as well. [p.s. im 21, so im not like 16 or anything lol]