I’m sooo confused

I had a baby almost 7 weeks ago, healed super quick got permission to start having sex about 2 weeks ago and have done it like 3 times unprotected (I didn’t know u could get pregnant while boobs had milk (I’m not breastfeeding) but I didn’t know now I do! For the past 3 days sometimes when I wipe I have very small blood tinged mucas and other times there’s nothing at all sometimes the toilet water is just very very lightly tinted light pink but nothing when wiping, and then today I wiped and there was a semi amount of pink blood and mucas amount on the paper and I put a pad on and have just a tad bit spotting on pad! Idk if I’m gonna start my period now or spotting and pregnant or what I’m so confused I also took a test 2 days ago and this was it, looks negative to me so I do have a appointment on Tuesday to see my ob so hoping I can find some answers