Lower abdominal pains??

I’m 7 weeks 4 days pregnant with my second baby and for the past couple days I’ve been having a pain that comes and goes in my lower right abdominal area. Last night it kind of felt like it radiated down to my hip flexor so I passed it off as round ligament pain and normal stretching. It went away through the night and then all day. But for the past couple hours it has returned and almost feels like someone tied a string to my ovary and is tugging on it. My lower back hurts on my right side too. The pain isn’t super intense, just nerve wracking. It’s not a sharp pain either. Anyone else experience this in the first trimester?