Someone please help.

Last night I went to the ER for pelvic pressure & hip pain I had been having for about 3-4 days. Some people said it's growing (baby & uterus) but it just felt so uncomfortable. Like something was sitting there trying to get poke it's way out through my stomach lol. It feels like when you're nervous and have that knot in your stomach but x20 & it's exactly where the baby is sitting. I have an at home doppler and have been able to continue to listen to the heartbeat through this pain/pressure but I went to be safe, they also did a urine test for a UTI. We saw baby (measuring at 15 weeks instead of 14w4d) and her heartbeat was 155. She was flopping all over and moving all around. I have no bleeding. Honestly, this pressure/pain started about a day after I received and used my doppler. 🤔 I was pushing pretty hard because that's what everyone online said to do when using it. Now I'm having some (maybe?) stretching pain but it hurts. It's right where the red line is. The ultrasound last night looked good, baby is growing good and moving around, and urine came back normal. Does ANYONE know what's going on or have any ideas? Anyone feel this way between 14-15 weeks? Someone pleaseeeee help because I'm freaking out! First time mom & Im worried about my daughter. Please help.

Ignore my nasty belly button ring scars.