How to track body temperature while ttc?

bree • Engaged 💕 23, 1 girl 🥰 one on thr way w

So I'm pretty sure I'm not pregnant (though I'm only 11 DPO RN all tests are negative) and I'm gonna really start tracking everything next month. I just wanted to know what yall use to track your body temperature and ovulation.

Help me get pregnant yall