Help! How do I know if my baby is head down or notq?

I'm 33 weeks and at my 20 week ultrasound he was head up. I just read an article with little tips about where the kicks are in your belly and where the heartbeat is and such. And well I was getting a mix of breach and head down! I feel him move up under my ribs a lot, I also feel him low in my belly, so low I can feel it in my butt haha! Most of his larger movements are right under my belly button or in that area (just to the left or right, or right above it). But they are also right under the ribcage. Where his heartbeat is differs every time I go in to see my doc. Sometimes she has to go down in my pelvis to find it, but last time it was right up with my belly button. I don't ever really feel kicks on my spine, mostly in the front of my belly. But again they're also just all over! The other day I felt a huge lump on my left side just below the ribs, I poked it and it moved away. It was either his butt or head, I couldn't tell which though. When he hiccups they're usually down low in my belly, almost in my pelvis. Like I said most of the kicks are right in the middle of my bump, just below, or right above it. I just don't want a breach baby, my other two I was able to have vaginally with no problems, I don't want to have a c-section. If he his breach I wanna flip him before it's too late! I need Some advice ladies.