Spotting with progesterone

Jillian
So I'm 6w5d with my rainbow baby via <a href="https://glowing.com/glow-fertility-program">IVF</a>. My doctor has me on Crinone 3x a day because I couldn't do the IM shots myself and my husband is still deployed. 
Well I've been spotting probably since 4 weeks but it's been brown. Yesterday just a hint of red but I feel like maybe it's because of inserting the Crinone so much? I still have serious symptoms and last week baby looked fine so just wondering if anyone else had this and what caused this spotting? Thanks!