hotpoint oven not hot!!

Well I am glad I dont have a turkey to go in! My ovens range lights have been acting weird… going on and off like power is off ,but it isnt . COmes on by itself will let me set the timer but not clock. The clock shows time but two hrs off and cant be changed. Range works fine. NOW the oven wont light it makes no sound and no gas smell. The oven is old. If part I need is the ignighter I dont want to spend 70 dollars and find out its something else! Can anyone give me a clue? I am a widow and my husband was the handyman. I do have a friends husband that could help out with instilation but dont want to spend money if not worth it! Thanks