Is something wrong with my female red tail?

[Justinbolleurs]

Hi I'm Justin. I have a female Nicaraguan red tail boa that's probably 3ft or so, she's about 5 years old, and she's acting really strange lately. She's not moving much at all and didn't eat for about a month or so and its breeding season here in south africa and she's living with a male for a couple of years, so I assumed she is pregnant but then, recently she started eating normally. She is also lying on her side and sometimes just her head is laid normally.. will really apprieciate if someone can help me out and I haven't bred with boas yet so..