4 weeks afte d&c. Could I be preggo

Antoine have a d&c and get pregnant right after wards? I didnt get labs done after wards until Tuesday I got some they were 13.8 which us in the 3 -4 weeks pregnant range. If I an I would be 4 weeks today. I had been taking tests at home just to get a negative so we can ttc more. And my line was like nonexistent almost on the 14th I tested again the 17th just to get the negative but it was darker like not even a squinter.. my dr said at my post OP appt that the leftover hormones shouldn't make it get darker but shed be shocked if I am preggo again already so ordered the labs. I got the nurse I dont like when I called an dall she said is they ste dropping nicely and I said but u havent had any others ? So is that in the 4 weeks after surgery range and she just said yeah ok. Like what does that mean and blew me off when i said something about why'd the tests show darker then. She told me to redi labs next week. I will take a test Sunday probably again and doing labs Monday. Just wondered if anyone had any experience. Everyone I know had negative tests by 2 weeks after so I'm confused. Just dint wannat get my Hope's up for no reason. Thanks if you read this whole book lol. Oh and all my symptoms were gone by 2 weeks after and came back hardcore in the last week